launch instance from image pops up a unusable modal dialog when csrftoken deleted or expired

[Gloria Gu]

If the csrftokon is not available...when click "launch instance" from angular image panel, it will have "warning policy check failed" message" and pop up a dialog. However the modal dialog is cramped and not usable.

I was testing the fix for bug https://bugs.launchpad.net/horizon/+bug/1555415 while I spot this.

How to reproduce it:

go to Project -> compute -> images make sure the table gets loaded

in chrome, settings -> show advanced settings -> privacy -> content settings all cookies and site data find the one with csrftoken, remove the csrftoken.

go to the image table again

click launch instance on any of the existing image.

[Gloria Gu (gloria-gu)]

Information regarding the bug:

When user clicks the launch instance action on the image...the launch instance modal service opens the dialog while launch instance model goes ahead to call APIs and load the contents for the dialog..unfortunately...when model service has issues, the modal service has no idea and still opens the dialog. Since the all the steps can not be loaded due to issues with backend...then the modal dialog just shows the shell of the modal without the nav and steps contents for the launch instance workflow.